private static object CreateFilterInstance(ConfigurationSection.MessageFilterConfigElement filter)
{
var filterType = Type.GetType(filter.Type);
if (filterType == null)
{
throw new ConfigurationErrorsException(string.Format("Unable to locate filter: {0}", filter.Type));
}
// Use Activator.CreateInstance here, as Message Filters should not be singletons, and need a
// unique instance per message handler.
return(Activator.CreateInstance(filterType));
}
/// <summary>
/// Uses reflection to marshal XML attributes into public properties on the filter
/// </summary>
/// <param name="filter"></param>
/// <param name="filterInstance"></param>
private static void SetFilterProperties(ConfigurationSection.MessageFilterConfigElement filter, object filterInstance)
{
// Filters configured via XML can have their properties set in XML, these show up in the AdditionalAttributes collection
// If there is data here, stuff it into the filter using reflection to find matching properties
if (filter.AdditionalAttributes != null)
{
var filterProps = filterInstance.GetType().GetProperties();
foreach (var kvp in filter.AdditionalAttributes)
{
var prop = filterProps.FirstOrDefault(p => p.Name.ToUpper() == kvp.Key.ToUpper());
if (prop != default(PropertyInfo))
{
prop.SetValue(filterInstance, Convert.ChangeType(kvp.Value, prop.PropertyType), null);
}
}
}
}